docs: remove syncfusion as higher tier sponsor from index.md

Removed Syncfusion sponsorship link from the index page.

Author: egil

docs/site/index.md

@@ -51,11 +51,6 @@ bUnit is available on NuGet in various incarnations. Most users should just pick
 A huge thank you to the [sponsors of bUnit](https://github.com/sponsors/egil). The higher tier sponsors are:
 
 <div class="d-flex flex-row mb-3 align-items-center">
-	<a href="https://www.syncfusion.com/blazor-components?utm_source=bunit&utm_medium=cpc&utm_campaign=bunit_blazor_bancy25" target="_blank" class="d-block p-3 text-center">
-		<img class="avatar avatar rounded-circle" src="https://avatars.githubusercontent.com/u/1699795?s=460" width="72" height="72" alt="@syncfusion" />
-		<br />
-		Syncfusion
-	</a>
   <a href="https://www.lambdatest.com/?utm_source=bunit&utm_medium=sponsor" target="_blank" class="d-block p-3 text-center">
     <img src="https://www.lambdatest.com/blue-logo.png" style="vertical-align: middle;" width="250" height="45" />
     <br />